Highlight field, type in the unit and get the conversion for all other units
Welcome to our powerful and intuitive unit conversion tool. This page features an extensive calculator that allows you to instantly convert between339 different units across15 categories.
Simply type a value into any field, and watch as all other units in that category update in real-time. Our comprehensive converter covers all your needs, from common measurements likeWeight, Mass, Distance, andSpeed to technical units forPressure, Power, Energy, andFlow Rate. It's an essential tool for engineers, students, and anyone needing a fast and reliable conversion.
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The SI (International System of Units) prefixes are used to form decimal multiples and sub multiples of SI units (see left table below). The number names show the corresponding names for each multiplier used in the english language (see right table below).
SI Power Prefixes
Prefix
Symbol
Multiplier
yotta
Y
1024
zetta
Z
1021
exa
E
1018
peta
P
1015
tera
T
1012
giga
G
109
mega
M
106
kilo
k
103
hecto
h
102
deka
da
101
deci
d
10-1
centi
c
10-2
milli
m
10-3
micro
µ
10-6
nano
n
10-9
pico
p
10-12
femto
f
10-15
atto
a
10-18
zepto
z
10-21
yocto
y
10-24
Number Names
USA & UK
UK (long scale)*
Multiplier
septillion
quadrillion
1024
sextillion
trilliard
1021
quintillion
trillion
1018
quadrillion
billiard
1015
trillion
billion
1012
billion
milliard
109
million
million
106
thousand
thousand
103
hundred
hundred
102
ten
ten
101
tenth
tenth
10-1
hundredth
hundredth
10-2
thousandth
thousandth
10-3
millionth
millionth
10-6
septillionth
milliardth
10-9
sextillionth
billionth
10-12
quadrillionth
billiardth
10-15
quintillionth
trillionth
10-18
sextillionth
trilliardth
10-21
septillionth
quadrillionth
10-24
Scientific notation is the way to easily handle very large numbers or very small numbers. E notation is a variation of this and is used in computers, calculators and this web page.
Example 1: Ordinary decimal notation: 100 Scientific notation: 1 x 102 or 1.00 x 102 (sometimes zeros are left to define precision) E notation: 1e2 or 1.00e2 (sometimes zeros are also left to define precision)
Example 2: Ordinary decimal notation: 1000 Scientific notation: 1 x 103 or 1.000 x 103 (sometimes zeros are left to define precision) E notation: 1e3 or 1.00e3 (sometimes zeros are also left to define precision)
Example 3: Ordinary decimal notation: 0.100160 Scientific notation: 1.0061 x 10-1 or 1.00160 x 10-1 (sometimes zeros are left to define precision) E notation: 1.0016e-1 or 1.00160e-1 (sometimes zeros are also left to define precision)
Example 4: Ordinary decimal notation: 0.0002 Scientific notation: 2 x 10-4 E notation: 2e-4
Unlike many other conversions tools on the web, this page offers a very fast and comprehensive set javascript-based converters. No need to select from cumbersome drop-down menus. Get units simultaneous converted for a particular category of measurement.
Example:
Convert the weight of 150 pounds to kilograms:Step 1:
Highlight the current value inside the box corresponding to the unit you have to convert. In this case it is pounds (lbs).
Step 2:
Type in 150 over the highlighted value and instantly read the answer for kilograms (kg). It shows 68.038855 which you can round up as you wish. So if you would like to round it to the nearest pound the answer will be 68 kilograms. In order to leave the precision up to the user, several digits will always be displayed for the results. Notice you get all the other units as well!
Note that all the unit abbreviations are shown on the right vertical column of this page.
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On our conversion calculators, we have used our best efforts to provide accurate results. Browser, computer and other software differences may affect the accuracy of our conversions. Additionally rounding errors limit the accuracy of the conversions as well.
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